2145667454 has 16 divisors (see below), whose sum is σ = 3871881600. Its totient is φ = 871173144.

The previous prime is 2145667441. The next prime is 2145667463. The reversal of 2145667454 is 4547665412.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4032944 + ... + 4033475.

It is an arithmetic number, because the mean of its divisors is an integer number (241992600).

Almost surely, 2^2145667454 is an apocalyptic number.

2145667454 is a deficient number, since it is larger than the sum of its proper divisors (1726214146).

2145667454 is a wasteful number, since it uses less digits than its factorization.

2145667454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8066447.

The product of its digits is 806400, while the sum is 44.

The square root of 2145667454 is about 46321.3498723861. The cubic root of 2145667454 is about 1289.7953432117.

The spelling of 2145667454 in words is "two billion, one hundred forty-five million, six hundred sixty-seven thousand, four hundred fifty-four".